Found at osageambulances.com:

Type I – Ford F550 Remount ambulance – Tri-State Fire Protection District

#chicagoareafire.com; #ambulance; #remount; #Ford; #F550; #Type1; #OsageAmbulance; #Tri-StateFPD;

Osage Ambulance photo

#chicagoareafire.com; #ambulance; #remount; #Ford; #F550; #Type1; #OsageAmbulance; #Tri-StateFPD;

Osage Ambulance photo

#chicagoareafire.com; #ambulance; #remount; #Ford; #F550; #Type1; #OsageAmbulance; #Tri-StateFPD;

Osage Ambulance photo

thanks Martin